Suction-fan or blower.



E. E. DICKERS ON. SUCTION FAN 0R BLOWER.

APPLICATION FILED JAN.23,1915.

Patented July 20, 1915.

ATTORNEY COLUMBIA PLANOORAPH C0.. wAsmNq'mN. D. c.

rost nusrron 2s. DICKERSQN, or enssumvn, TEXAS;

sUcr'IoN-FAN on BLOWER.

Specification of Letters Patent.

Patented July20, 1915..

lrpplication'filed January 23, 1915. Serial no. 4pm.

To all whom it may concern Be it known that I, Eos'rion IDICKER- soN, citizen of the United States, residing at Oleb-urne, in the county of Johnson and State of Texas, have invented certain new and useful lmprovementsinsuction Fansor Blowers, of which the following is a specification. i

My invention has relation to combined suction fan or 'blo'wer'adapted particularly for use in the conveying and cleaning of fibrous materials such for instance ascotton or the like and in such connection it relates more particularly to the arrangement and construction of such a fan and "blower.

In the conveying, cleaning and distributing of raw fibrous material such as *cotton andthe like, an essential feature of the apparatus is a blower and suction fan interposed in the system or apparatus at a point between the source from which the fiber is taken to the first cleaning mechanism ofthe apparatus. In an apparatus such as is disclosed in my companion application for ipatent filed of even date herewith appropriate means are shown, described and claimed whereby after the cotton or fiber is sucked from the source of supply it is forced under pressure of air torthe subsequent means and instrumentalities through. which the fiber HlUStPELSS to be cleaned and other-Wise prepared prior to its distribution, still under pressure of air, to theigins or other machines for subsequent treatment of the fiber.

It is the object of my apresen't invention to provide a suction fan or blower theparts of which are so constructed andarratrged that during the passage ofthe fibrous material through the fan and blower the material will be partly *oleansed "before it leaves the fan or blower under pressureef air 'to enter the respective cleaning mechanisms in the aforesaid or similar apparatus.

To this end my invention consists, first, in providing a com'binedsucti'on and blowing apparatus wherein "the fan proper carries at its inlet face a perforated plate secured to and revolving with the blades of the fan, second, in providing a substantially cylindrical chamber having both its peripheral wall and its side wall perforated, within which chamber the fan is adapted to revolve, said chamber communicating at its periphery with the outlet from the blower and at its side wall with an inlet from the Suction pipe; third, in providing an inlet from the suction pipe to theperforated side wall of the fan chamber, said inlet having an outwardly flaring perforated flange at the point of its connection with the suction p pe and thereafter the body ofthe inlet pipe tapering to a smaller diameter to a point where it connects with the flat perforated Wall of the fan chamber the tubular wall o'fs'aidbody of the inlet pipe being also perforated; and fourth, in providing an outer shell or easing inclosing the perforated rnlet pipe, the perforated fan chamber and the fan with perforated side wall, said casing having a cylindric fan chamber, an inlet chamber and a discharge chamber.

The nature and scope of my invention will be more fully understood from the following descrrptiontaken in connection with the accompanying drawings forming part hereof, in which,

Figure 1 is a side elevational view of a combined suction fan and blower embodying main features of my invention. Fig. 2 is an end elevational view of the same. F ig. 3 is a cross sectional view taken on the line a-a of Fig. 1. Fig. 4: is a longitudinal sectional View taken on line bb of Fig. 3, and Fig. 5 is 'a cross sectional view taken 'online c a of Fig. 1, and illustrating the connection 'between the discharge chamber of the fan andthe discharge pipe.

Referring to the drawings the shell or casing for the fan and blower mechanism consists essentially of three parts, namely a ma-in cylindrical body 1 wherein the fan is adapted to rotate; afrusto-conical leg or arm 2 projecting from the side of the body to the-inlet or suction pipe 8, the taper of the leg or arm 2 being from the side of cylindric body 1 to the pipe 3; and third a discharge chamber 4 of preferably rectangular cross section and projecting tangentially from the rim of the cylindric body 1 and tapering into a tube or pipe 5 which is the dischargepi-pe of the apparatus to which air under pressure is delivered by the fan 6. The blades 7 of the fan radiate from a sleeve 8 keyed or otherwise secured to a shaft 9 eX- tendingoutside the cas'ing of body 1. The shaft 9 has itsbearings 10 in a frame or standard 11 and this standard or frame 11 serves "as a support for the annulus or collar 12 bolted or otherwise secured to one side wall 1 of the main body 1 of the blower casing. This side wall 1 is solid except for an aperture through which the bearing 10 mo jects to support the shaft 9 within said body 1. The opposite side of the main body 1 is entirely open at the point of junction of the body 1 with the base of frusto-conical leg or arm 2, as clearly indicated in Fig. 3.

The peripheral wall of body 1 is not continuous but is bent tangentially as at 1 to form a rectangular or square duct 13 leading to the discharge chamber 4 as clearly shown in Fig. 4.

The main body 1 has an interior lining 14 of perforated sheet metal separated some distance from the peripheral wall of said body and concentric therewith. The fan 6 revolves in the concentric perforated compartment thus formed. The face 15 of fan 6 which is adjacent to the inlet or suction chamber 2 is in the form of a perforated disk or plate suitably united to and carried by the edges of the fan blades 7. The opposite face 16 of fan 6 is in the form of an annulus or ring which is not perforated and revolves adjacent to the closed side wall 1 of the body 1. The perforated compartment 14. has its side adjacent to the suction chamber 2 partly inclosed by an annulus or ring 17 of perforated sheet metal and to the cen-' tral opening of this ring 17 is bolted or otherwise secured the smaller end of a perforated nozzle 18 traversing or crossing through the suction chamber 2 and extending from plate or ring 17 to the suction pipe 3. At the point of connection with said pipe 3, the nozzle 18 flares outwardly into an annular perforated collar or flange 19 as clearly shown in Fig. 3.

The frusto-conical shell forming the wall of the suction chamber 2 is bolted or riveted to the side of main body 1 and said side and shell for chamber 2 are suitably supported in a frame or standard 20, the two standards 11 and 20 thus constituting the support for the fan and blower. The space 21 between the perforated compartment 14 and the outer shell for body 1 communicates preferably at the base of the fan with a pipe 22 leading to the exterior of the fan and blower. The space 23 between the perforated nozzle 18 and the wall of the conical leg or arm 2 also communicates with the space 21 through the perforated flange 24 projecting periphera-bly from the perforated compartment 14 beyond the perforated annulus or ring 17 forming a partially side closure for said compartment 14.

In the operation of the device, the fan blades 7 in revolving within the perforated compartment 14 suck air and fibrous material through pipe 3 and perforated nozzle 18 into the compartment 14. The fibrous material is prevented from reaching the fan blades 7 by the perforated disk 15 carried by said blades. In its passage through nozzle 18 the fiber is relieved of some of its dirt or dust which passes through the perforations of the nozzle '18 into the compartment 23 in leg 2 in which a partial vacuum is created by the revolution of the fan. The fibrous material under air pressure is then forced through compartment 14 to the outlet compartment 4 and thence under air pressure into the distributer or discharge pipe 5. In

1. In a combined fan and blower, a casing arranged with a side conical leg forming an inlet or suction chamber, a main cylindrical body wherein the fan is arranged to rotate, and an outlet leading from the main body tangentially to the periphery of said main body, of a screen partition located within and concentric with the peripheral wall of the main body of the casing, a fan revolving in the compartment formed by said screened partition, an annulus of perforated metal forming an end closure for a portion of said screened compartment, the central opening in said annulus communicating with the in let to the suction chamber, and a perforated disk forming that face of the fan which revolves adjacent to the inlet opening in said annulus.

2. In a combined fan and blower provided with an inlet suction chamber, an outlet discharge chamber and an intermediate chamber wherein the fan is arranged to rotate, of a screened compartment formed 1n the intermediate chamber and a perforated nozzle.

connecting said screened compartment with the inlet to the suction chamber, said nozzle traversing said suction chamber of the casing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EUSTICE E. DICKERSON. IVitnesses:

Gr. G. VVALDROP, G. SCHUMM.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. r 

